| 摘要 |
A fuel tank for a vehicle is formed of a tank main body in which an upper tank and a lower tank (120) are mutually joined to form a closed space in which fuel is housed, and a sub-tank (130) fixed to a bottom surface part of the lower tank (120) by spot welding (150), in which a plurality of rows of the spot welding (150) are set along a longitudinal direction of the lower tank (120) with an interval therebetween in a width direction of the sub-tank (130), at least one bead (142) positioned between the rows of the spot welding (150) and extending continuously along the longitudinal direction of the lower tank is formed on the bottom surface part of the lower tank (120), and a lower surface of the sub-tank (130) has no portion that is not brought into contact with the bottom surface part of the lower tank (120) except for the bead (142).
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